X-Git-Url: http://git.nikiroo.be/?a=blobdiff_plain;f=src%2Fbe%2Fnikiroo%2Futils%2Fui%2FListenerItem.java;fp=src%2Fbe%2Fnikiroo%2Futils%2Fui%2FListenerItem.java;h=3fa41c83cb51e3c5e7ef9ecad6f7e07204e2b203;hb=fa9ed2183664589496a443157f195a03862f0c66;hp=0000000000000000000000000000000000000000;hpb=bc4db23ff5c21d7d4716f9b7f97de73b15a6fc21;p=nikiroo-utils.git

diff --git a/src/be/nikiroo/utils/ui/ListenerItem.java b/src/be/nikiroo/utils/ui/ListenerItem.java
new file mode 100644
index 0000000..3fa41c8
--- /dev/null
+++ b/src/be/nikiroo/utils/ui/ListenerItem.java
@@ -0,0 +1,53 @@
+package be.nikiroo.utils.ui;
+
+import java.awt.event.ActionListener;
+
+/**
+ * The default {@link ActionListener} add/remove/fire methods.
+ * 
+ * @author niki
+ */
+public interface ListenerItem {
+	/**
+	 * Check that this {@link ListenerItem} currently has
+	 * {@link ActionListener}s that listen on it.
+	 * 
+	 * @return TRUE if it has
+	 */
+	public boolean hasListeners();
+
+	/**
+	 * Check how many events are currently waiting for an
+	 * {@link ActionListener}.
+	 * 
+	 * @return the number of waiting events (can be 0)
+	 */
+	public int getWaitingEventCount();
+
+	/**
+	 * Adds the specified action listener to receive action events from this
+	 * {@link ListenerItem}.
+	 *
+	 * @param listener
+	 *            the action listener to be added
+	 */
+	public void addActionListener(ActionListener listener);
+
+	/**
+	 * Removes the specified action listener so that it no longer receives
+	 * action events from this {@link ListenerItem}.
+	 *
+	 * @param listener
+	 *            the action listener to be removed
+	 */
+	public void removeActionListener(ActionListener listener);
+
+	/**
+	 * Notify the listeners of an action.
+	 * 
+	 * @param listenerCommand
+	 *            A string that may specify a command (possibly one of several)
+	 *            associated with the event
+	 */
+	public void fireActionPerformed(String listenerCommand);
+}